SFK combines a hundred command-line and file operation tools into a single binary. It operates on single files, directories or trees, and even zip/tar archives. It provides text searching (also in binary files), search and replace operations, checksum generation, locating duplicate content, file splitting and merging, CR/LF linebreak conversion, hexdumping, colorization. There are also instant servers for FTP and HTTP or direct file transfers, or debug TCP/UDP and HTTP connections. It's also rel